Application of Laser Soldering Technology in Automotive Micro-Motor Welding Processing

Application of Laser Soldering Technology in Automotive Micro-Motor Welding Processing

Application micro-motors are compact, high power- density electric motors widely utilized across multiple vehicle systems. These motors primarily serve as actuating components for both fundamental vehicle operations and comfort features. Specifically, they play pivotal roles in essential functions including braking, steering, speed regulation, and engine cooling systems, while simultaneously powering comfort-oriented applications such as air conditioning, heating, seat adjustment, and power window mechanisms.

Beyond these applications, automotive micro-motors are extensively employed in control systems to perform critical functions including detection, computation, amplification, execution, and conversion of electromechanical signals and energy. With modern automobiles increasingly emphasizing passenger comfort and automated control capabilities, micro-motors have become indispensable components. Some passenger vehicles incorporate more than twenty micro-motors to facilitate various movements, ranging from simple rotary motions to complex kinematic operations.

A complete automotive micro-motor system typically integrates several key components: micro-motors, gearboxes, micro-actuators, micro-sensors, and micro-controllers, all working in concert to ensure proper vehicle functionality. The motor types employed in these control systems are generally categorized as DC brushless motors and DC brushed motors, both designed to handle electromechanical signal and energy processing tasks. Various gearbox configurations are implemented to modify output speed and torque characteristics.

These systems are characterized by high torque output, low operational noise, compact dimensions, lightweight construction, user-friendly operation, and consistent speed performance - attributes that make them ideally suited for modern automotive applications where space efficiency and reliability are paramount.

Brushless DC Motor (BLDC Motor)：

Brushless DC Motor - External Appearance and Internal Structure Diagram

Brushed DC Motor:

Brushed DC Motor - External Appearance and Internal Structure Diagram

Micro Gearbox:

Micro Geared Motor Illustration

This refers to an integrated unit combining a gear reducer and an electric motor (commonly called a "gearmotor"). It is also known as a micro reduction motor, designed to reduce speed and increase torque to meet the operational requirements of mechanical equipment. This integrated assembly may alternatively be referred to as a gear reducer or geared reduction motor.

Typically, micro geared motors are supplied as pre-assembled units by specialized gearmotor manufacturers. Purchasing the gearbox and motor separately significantly compromises their integration quality and performance.

Features:

Compact structure, high reliability, long service life, and superior load capacity;

High efficiency - planetary gear motors achieve over 95% efficiency with low energy consumption and excellent performance;

Low noise, high precision, with positioning accuracy ensured by precision machining.

1. Regarding the application of micro motors:

With the continuous development of automotive technology, there is increasing demand for vehicle comfort, environmental friendliness and intelligent features. The variety and specifications of automotive motors continue to expand, with micro motors being widely applied in engine systems, chassis systems, body systems and accessory systems. With the development of new energy vehicles, micro motors are also being used in automotive thermal management systems and as main drive motors for electric vehicles.

2. Regarding the development background of micro motors:

The micro motor industry is technology-intensive, originating in European countries like Germany and Switzerland, and further developed in Japan. Since China's reform and opening-up, as a developing country, China has undertaken the transfer of automotive micro motor industry from developed countries like Germany and Japan, with technology dissemination gradually shifting to China.

3. Future development trends:

Global automakers are proposing technical application requirements for active safety, intelligence and comfort. Micro motor systems need to continuously develop new structures, adopt new materials and improve processing technologies to meet growing application demands. In the future, automotive micro motors will develop towards lightweight, high-efficiency, low-noise and intelligent directions. The goals of vehicle active safety, intelligence and comfort can be achieved through micro motor drives installed throughout the vehicle body.

Songsheng Opto Desktop Laser Soldering System Illustration

Advantages of Songsheng Opto Laser Soldering Technology for Micro-Motor Applications:

1. High-Precision Processing: Minimum laser spot diameter of 0.1mm enables soldering of micro-pitch mounted components.

2. Localized Heating: Minimal thermal impact on substrates and peripheral parts due to brief, concentrated heating. Customizable heating profiles ensure consistent soldering quality across different lead types.

3. No Consumables: Eliminates soldering iron tip wear and heater replacement, enabling high-efficiency continuous operation.

4. Micron-Level Accuracy: Laser spots achieve micrometer-scale precision with programmable time/power control, permitting soldering in spaces under 1mm.

5. CCD Positioning: "What You See Is What You Get" visual alignment eliminates repetitive calibration.

6. Non-Contact Process: No mechanical stress from physical contact and zero electrostatic discharge risks.

7. Eco-Friendly Technology: Laser as a green energy source provides the cleanest processing method—consumable-free with simple maintenance and operation.

8. Proprietary Multi-Beam Coaxial Technology: Integrated laser, imaging, temperature measurement, and red indicator beams.